Steel Omega Seamaster Regatta Diver 300m Co-Axil Chronograph. 18.104.22.168.01.002. Case diameter 44mm. Water resistant to 300 meters. Automatic Omega Calibre 3330 chronograph movement, Free sprung-balance equipped with Si14 silicon balance spring and a power reserve of 52 hours. Black dial with Luminous hour markers and skeleton hands. Black sub dials, features a black dial with a yellow five-minute countdown tracker on the 30-minute recorder at 3 o’clock, a 12-hour recorder at 6 o’clock and a small seconds dial at 9 o’clock. Matt black ceramic unidirectional rotating bezel, steel case with a helium-escape valve and an integrated date corrector at 10 o’clock. Steel bracelet with folding clasp. Box and papers dated November 2013. Pre-owned unworn. Our reference W5048.